Introduction
I keep hunting for the robotic pool cleaner that's actually worth buying, and two that kept coming up were the Aiper Seagull 600 and the Dolphin Cayman. They're both popular, but they aim at very different buyers and budgets. I bought both, ran them hard, and put my honest take here so you don't have to guess.
The Aiper Seagull 600 is sold on price, and yes, it's cheap. But that's where the good news stops. Its weak motor and lack of an active brush made it a struggle just to get the floor clean. And the battery? Rough. Mine needed a recharge basically every day and barely lasted a single cleaning session.
The Dolphin Cayman is a mid-priced robot that comes fully loaded. Powerful brush, Hypergrip tracks, Smart Nav 2.0, the whole setup cleans thoroughly and efficiently. It even keeps a programmable timer for automatic cleanings, which a lot of newer robots in its class have quietly dropped.
Both robots have their fans, but the performance gap is stark. The Seagull 600 fumbled the basics while the Cayman delivered a complete clean, which is exactly why it's one of my best pool robots of the year. My full reviews dig deeper into what each one nails and where it flops.
"The Cayman cleans itself while you're inside. The Seagull needs you standing over it."
How We Test
When I test a robot, I judge it on the same three things every time: pool coverage, filtration, and the feature set and warranty. I ran both the Aiper Seagull 600 and the Dolphin Cayman through that gauntlet in my own pool over three months.
Coverage first. I want to see how much of the pool each robot actually reaches, walls and waterline included. The Seagull 600 came up short because its weak motors and missing navigation system keep it stuck on the floor. The Cayman, with its Hypergrip tracks and Smart Nav 2.0, cleaned floors and walls without breaking stride.
"The Cayman climbs walls and finishes on its own. The Seagull can barely handle the floor."
Then filtration, where I watch how well each one pulls debris out of the water. The Seagull 600's flat filter was a letdown, unable to collect and hold debris properly. The Cayman's fine filter basket was easier to clean and simply more effective at trapping what it picked up.
Last comes features and warranty. The Seagull 600's cordless design sounds nice until you hit the long charge times and short battery life. The Cayman scored high for its programmable timer and a solid 2-year warranty, and it ran hands-off through the entire test.
"Set the Cayman's timer once and you can basically forget about it."
Coverage
On coverage, the Aiper Seagull 600 and the Dolphin Cayman aren't in the same league. The Seagull 600 only cleans the floor. Weak motors, small plastic wheels, and no navigation system mean it can't climb walls or handle an incline, period.
The Dolphin Cayman covers far more. It's built to clean floors and walls, and it does it well. Hypergrip tracks, a powerful active brush, and Smart Nav 2.0 let it move through the pool on a calculated path instead of guessing.
"For a mid-priced robot, the Cayman cleans like something that costs more."
Even at its mid-range price, the Cayman beats the Seagull 600 in every part of coverage. Its Hypergrip tracks grip the surface so it scrubs and vacuums instead of floating over debris. The Seagull 600's little wheels, meanwhile, kept getting stuck and turning cleaning into a fight.
The scores say it plainly. The Seagull 600 gets a 2/5, which is what floor-only coverage earns. The Cayman lands a solid 4/5 for its stronger cleaning tech and much wider reach.
"Dual brushes and real navigation are why the Cayman gets to the spots budget robots miss."
If you want a robot that covers the pool properly, the Dolphin Cayman is the clear call. It handles floors and walls with ease, which makes it a smarter buy than the Seagull 600 and its struggle with the basics.
With that 4/5 coverage score, the Cayman is a dependable choice for a top-to-bottom clean. The Seagull 600 and its lower score just can't keep up here.
Filters
The filters on the Aiper Seagull 600 and the Dolphin Cayman are night and day, and it shows in how each robot performs. The Seagull 600's flat filter neither collects debris well nor filters the water properly. Most of what it does pick up ends up loose at the bottom of the unit, so cleanup is a mess.
The Dolphin Cayman runs a fine filter basket, the MaxBin, and it's better in every way. It pops out and cleans easily, and it catches a wide range of debris, fine particles included. Next to the Seagull 600, keeping the Cayman clean is almost pleasant.
"The MaxBin catches more and cleans easier. That's the whole comparison."
On actual debris, the Seagull 600 struggles with both big and small. Its flat filter often can't hold fine particles, so your water never gets truly clear. The Cayman handles the full range, tiny grit to big leaves, and its basket holds more while filtering better.
Maintenance is where the Cayman really pulls ahead. You pop the filters out and rinse them individually, quick and clean. The Seagull 600 makes you deal with clips and loose debris rattling around inside the unit.
"Easy cleanup and better filtration put the Cayman ahead, no contest."
The filter scores back it up. The Seagull 600 gets a 2/5 for its limitations, while the Cayman earns a solid 4/5 for the MaxBin and its stronger filtration. In this category the Cayman wins outright.
If filtration matters to you, the Dolphin Cayman outclasses the Aiper Seagull 600 across the board. Its filter system runs circles around that basic flat filter and keeps your pool clear all season.
Feature Set
The feature sets of the Aiper Seagull 600 and the Dolphin Cayman pull in opposite directions. The Seagull 600's calling card is going cordless. No cable sounds convenient, but that upside evaporates fast once you hit the long charge times and short battery life. You wait hours for a charge to get a 90-minute run, so you spend more time charging than cleaning.
The Cayman's standout is its programmable timer. You set a schedule and it cleans on its own, no need to start it by hand each time. Daily, every other day, every three days, your call. That kind of automation is genuinely rare at this price, and a lot of same-tier robots skip it.
Usability is another Seagull 600 weak spot. Its flat filter doesn't filter well and is a pain to clean, and you're left digging debris out of the unit. The Cayman flips that around. Its MaxBin pulls out and cleans easily, and you can pop the filters out to rinse them one at a time, which is a real upgrade over the Seagull.
The cleaning tech splits them too. The Seagull 600 has no active brush, so it can't scrub away debris and algae. The Cayman comes with a powerful active brush and Hypergrip tracks and cleans both the floor and walls thoroughly. For anyone who wants a complete clean, that's a big deal.
"That programmable timer is the difference between running a robot and remembering to."
Warranties tell the same story. The Seagull 600 comes with a one-year warranty, which is thin, since problems tend to show up right after it lapses. The Cayman gives you a two-year warranty backed by Maytronics, so you're covered longer if something goes wrong.
The scores fall where you'd expect. The Seagull 600 scored a 2/5, mostly for its poor battery and bare feature list. The Cayman earned a solid 4.5/5 for the feature and warranty category, thanks to its timer, easy-clean design, and better coverage.
Add it up and the Dolphin Cayman outclasses the Aiper Seagull 600 on features and usability both. Better cleaning tech, a real timer, and a filter you won't dread make it the smarter buy for a low-effort clean.
"If you want a robot that just handles it, the Cayman is the one."
Conclusion
Wrapping up the Aiper Seagull 600 versus Dolphin Cayman, these two clearly serve different budgets and needs. But their performance splits so far apart that the choice ends up being easy.
The Aiper Seagull 600 scores an overall 4/10, which reflects its limits on coverage, filtration, and features. The cordless idea is undercut by long charge times and short battery life, the flat filter is inefficient, and with no active brush it can't scrub.
"The Seagull 600 struggles with the basics, and the basics are the whole job."
The Dolphin Cayman scores an impressive 9.4/10 and stands out in its class. With a programmable timer, the MaxBin filter, and SmartNav 2.0, it cleans thoroughly and efficiently. Floors, walls, and a strong filter system put it among my top pool robots of the year.
Head to head, the Dolphin Cayman is the clear winner. Better cleaning, wider coverage, and easy-to-use features make it a genuinely hands-off solution. If you're looking past the Seagull 600, the Cayman is the far more reliable pick.
"For a robot that's actually loaded and reliable, the Cayman is the one to get."
The Cayman doesn't just beat the Seagull 600, it sets the bar for what a robot at this price should do. It's a good reminder that spending a bit more gets you real performance and staying power.
The Seagull 600 will appeal to tight budgets, but the small extra spend on a Cayman buys a much more capable, durable robot. For more picks and comparisons, my detailed reviews have you covered.
All told, the Dolphin Cayman is the better robot by a wide margin, with automated cleaning that leaves the Seagull 600 behind. If you want a complete, reliable solution, that's the way to go.
"Get the Cayman if you want the pool handled for you."
Alternate Robots
If you're weighing the Aiper Seagull 600 or the Dolphin Cayman, a few other robots I've tested are worth a look. The Dolphin Quantum, Dolphin Premier, and Aquabot REVA all shine in different areas.
"If you want more robot for your money, start with these three."
The Dolphin Quantum is a strong value in the mid-price range with features to match. It has the Hyperbrush, Smart Nav 2.0, and an XXL MaxBin, plus NanoFilters for cleaner water. If you want a step up from the Seagull 600, the Quantum hits a sweet spot on performance and price.
The Dolphin Premier is a ProLine model built for heavy work. Multi-Media filtration and a larger debris capacity make it ideal for pools that get hammered with leaves and fine grit. It covers the whole pool, waterline included, and comes with a three-year warranty that sets it apart on durability.
"If you want the absolute best performance, the Premier is hard to beat."
Want budget-friendly but still capable? The Aquabot REVA is a good shout. It has a phone app for control, a gyroscope for better wall and waterline cleaning, and dual-layer standard filters. It covers the whole pool and is especially good at the waterline, usually the dirtiest strip. If the Seagull 600 let you down in those areas, the REVA is a solid alternative.
Bottom line, while both the Aiper Seagull 600 and the Dolphin Cayman have their perks, the Dolphin Quantum, Dolphin Premier, and Aquabot REVA bring more features and better performance. Any of them is worth a look if you want a robust, efficient clean.